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Is my PC Power and Cooling 750w enough???

post #1 of 9
Thread Starter 
I just got a new XFX hd7970 DD BE and its got a nasty case of coil whine. I've read this can be caused by the PSU if it isn't powerful enough. I have the PC Power and Cooling Silencer mk 1 quad(red) 750 watt 80 plus certified. Would it be causing this? Newegg has already sent me a RMA packing label and all that and I'm in the middle of trying to run it maxed out for about 12 hours or so in the crisis 3 menu screen(after about 6 hours its running at 72 degrees). Running the Crysis menu has lessened the noise somewhat so I'm hoping that after a while it will go away. A friend had a 7850 with the same problem and he said it went away after a few days of gaming. I previously had the XFX HD7850 DD and had no problems or noise. Wanted better framerates so... Any advice?

Amd fx-8350@4.7ghx
Asus Sabertooth 990fx r2.0 gen3
G. Skill ripjaw X 16gb 1949mhz
XFX HD7970 DD BE
OCZ Vertex4 120gb SSD
Seagate 1tb dada hdd
Apevia X-telstar green
Asus 27" monitor
Logitech g110
Gila Gaming mouse
PC Power and Cooling Silencer 750w quad red
Coolermaster V-8
The Falcon
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The Falcon
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post #2 of 9
Hello,
From the looks of your specs 750 should be enough , I mean it is not crashing are unstable right? , power supply does not smell bad right? , not really hot is it ?
If non of those are occurring then its not the PSU .


-ROG
post #3 of 9
Hey there!

Coil Whine usually occurs when a user is getting 1000 FPS+ on games, or any other outstanding number. Before you RMA, you may want to leave the GFX on a menu for a couple of nights so that the card can get 'used' to the environment, and so that it can adapt to the continuous environment like web surfing. I've heard that fixes most of the coil whine. As for the PSU, 750w is actually overkill. It's a bit late now but 600w would be a more viable option for now. I guess for future-proofing its good but with the current system it's more that fine.

The rest of your system is fine, and you after this problem is fixed it should be smooth sailing. If the coil-whine doesn't stop after 48hrs+ of menu time, then definitely look into that RMA that Newegg sent you. It's unfortunate that you get this, it's all part of the 'silicon lottery' biggrin.gif
Also, make sure that it's your GPU, and not other components. I'm sure your certain, but it's always good to double-check; this problem is more common among other components such as the PSU.


Hope I helped. thumb.gif

Some sources that may help you:

http://www.overclock.net/t/1259672/7970-coil-whine-a-way-to-fix-it-solved/10
http://forums.anandtech.com/showthread.php?t=2311833
http://forums.whirlpool.net.au/archive/2121884
post #4 of 9
Welcome to OCN!

And you should probably ask this question in the PSU or GPU section of the forums.
Cobra Command
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Cobra Command
(30 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7-4770K @ 4.5GHz MSI Z87-GD65 Gaming MSI Gaming GTX 770 4GB OC Edition G. Skill Sniper 16GBs 2133 
Hard DriveHard DriveOptical DriveCooling
Samsung Spinpoint 1TB Seagate Barricuda 3TB LG DVD Burner w/ Lightscribe XSPC Raystorm 
CoolingCoolingCoolingCooling
1 Corsair AF140 7 Corsair SP120's EK-D5 X-Res Top 100 CSQ Reservoir and Pump Top XSPC D5 Vario Pump 
CoolingCoolingCoolingCooling
Swiftech MCRX20-XP Radiator Monsoon Free Center Black Compression Fittings Primoflex Advanced LRT Tubing BitsPower Black Dual Rotary 90-Degree Compressi... 
CoolingCoolingOSMonitor
Mayhem's Biocide Extreme Distilled Water Windows 7 64-Bit Home Premium ASUS VG248QE 
MonitorMonitorKeyboardPower
ASUS VG248QE ASUS VG248QE Razer BlackWidow Chroma Cooler Master 850W Modular 
CaseMouseMouse PadAudio
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OtherOther
Corsair Force 3 128GB SSD Samsung EVO 850 500GB SSD 
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post #5 of 9
i crossfire 7950/7970 using a 700W psu. join the Valley bench thread. my 7950's coil whine went away running that bench a few times.

http://www.overclock.net/t/1360884/official-top-30-unigine-valley-benchmark-1-0

WELCOME to OCN.
Second Intel Rig
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Second Intel Rig
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post #6 of 9
750 what?

its enough and we hear about coil whines on here, and most are a unnecessary worry thumb.gif
post #7 of 9
Thread Starter 
Thanks everyone for the quick responses, I have checked the PSU to make sure its not hot or smells of ozone/burnt plastic etc... Ive had it running the crisis 3 menu for about 10-12 hours now. Ill turn it back on when I get off for lunch. Its definitely a gamble with silicone Alphacheescake lol. This is the first time I'm having to RMA something from newegg. Oh well, Ill continue the menu this weekend and if its not gone by Monday morning ill RMA it. Thanks again everyone.
The Falcon
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post #8 of 9
750 watts is more then enough even if you have two cards

The XFX DD cards are the worst AMD cards you can buy

I know i had one myself and got rid rid of it a short while after i bought it
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Seravee
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Hard DriveHard DriveHard DriveHard Drive
Samsung 840 Evo WD Green WD30EZRX  WD Green WD40EZRX  WD Green WD60EZRX  
Hard DriveOptical DriveCoolingCooling
WD Red WD80EFZX 8TB  LG CH12NS30 5x Noctua NF-A14 FLX Noctua NH-D15 
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Windows 7 64 Bit Asus PG279Q Corsair Gaming Strafe RGB EVGA SuperNova G2 750 watt 
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Phanteks Enthoo Luxe Roccat Kone XTD Laser Roccat Sense Metor Sennheiser HD 598 
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post #9 of 9
Thread Starter 
I probably won't get another xfx but it was a great deal at $285 usd. I got rid of the coil whine by running the crap out of it from Thursday til yesterday(sun). The only noise from it now is when the fans spin up. Framerates are great compared to my 7850 so I'm happy. Thanks again everyone for the responses. T
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